// Copyright (c) Appeon. All rights reserved.
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. 
// You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0.

namespace SnapObjects.Data
{
    public interface ISqlCompute
    {
        /// <summary>
        ///     Gets the SQL expression which represents the computed column.
        /// </summary>
        string Expression { get; }

        /// <summary>
        ///     Gets the alias of the computed column.
        /// </summary>
        string Alias { get; }

        /// <summary>
        ///     Gets whether the computed column has an alias.
        /// </summary>
        bool AliasDefined { get; }

        /// <summary>
        ///     Gets or sets the zero-based order of the computed column which the property is mapped to.
        /// </summary>
        int Order { get; }

        /// <summary>
        ///     Gets or sets the data type (specific to the database provider) of 
        ///     the computed column which the property is mapped to.
        /// </summary>
        string TypeName { get; }
    }
}
